Longman Dictionary of Contemporary English homepage

dosage

 noun
     
Related topics: Drugs, Medicines
dos‧age [countable usually singular]
MD the amount of a medicine or drug that you should take at one time, especially regularly
dosage of
He was recommended a high dosage of morphine.
The daily dosage is steadily reduced over several weeks.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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